const fs = require('fs')
fs.readFile('./valid1.js', (err, data) => {
  Promise.resolve().then(() => {
    console.log('pormise-1-1');
  }).then(() => {
    console.log('promise-1-2')
  })
})
setTimeout(()=>{
  console.log('setTimeout1')
},1)
setTimeout(() => {
  console.log('setTimeout2');
  
}, 10000)
for(let i = 0; i < 100000; i++) {}